31results about How to "Guaranteed leveling accuracy" patented technology

The invention relates to an integrated and fast equipment alignment device and an equipment alignment method. The integrated and fast equipment alignment device comprises a central sizing iron block, wherein three adjusting lugs are arranged on the periphery of the central sizing iron block in the shape of an isosceles triangle, the adjusting lugs are respectively located at three vertexes of the isosceles triangle, a hole is bored in the center of each of the three adjusting lugs, an adjusting bolt is arranged in each hole in a penetrating mode, an adjusting nut and a fixing nut are screwed on each adjusting bolt in a sleeved mode, the adjusting nuts are located below the adjusting lugs, and the fixing nuts are located above the adjusting lugs. According to the integrated and fast equipment alignment device and the equipment alignment method, materials can be obtained easily, the adjustment is accurate, the working procedures are simple, and the application scope is wide; in addition, when the integrated and fast equipment alignment device and the equipment alignment method are used for installation of equipment, not only can accuracy of the elevation and the levelness of the foundation sizing iron block be guaranteed, but also the integrated and fast equipment alignment device can bear heavy equipment; and moreover, the arrangement is fast, and the cost is low.

The invention discloses an automatic leveling device for a binocular stereo camera, its leveling control system and a control method. The device includes a leveling target, a control system, a clamping system and a movement adjustment system; The image position signal of the leveling target is received to control the action of the clamping system and/or the movement adjustment system; the clamping system clamps or releases the two circuit boards according to the instructions of the control system; the two moving The adjustment system abuts against the two circuit boards in one-to-one correspondence, and drives the circuit boards on the corresponding sides to reciprocate in the vertical direction for preset displacements according to the instructions of the control system. The automatic leveling device of the binocular stereo camera can realize automatic leveling without manual leveling by staff, thereby simplifying the camera leveling operation process and reducing the workload of camera leveling.

The invention relates to a pull type laser land leveler which comprises a rack and a land leveling shovel. A wheel shaft is fixedly arranged on the rack. The two ends of the wheel shaft are provided with a first land wheel and a second land wheel respectively. The pull type laser land leveler further comprises an angle sensor, a power cylinder, an eccentric rotation piece, a supporting piece and a controller, wherein the angle sensor and the power cylinder are arranged on the land leveling shovel, the eccentric rotation piece is hinged to the wheel shaft, and the supporting piece and the controller are fixed to the wheel shaft. The first land wheel is hinged to the eccentric rotation piece, a piston rod of the power cylinder is hinged to the eccentric rotation piece, and a cylinder body of the power cylinder is hinged to the supporting piece. The hinge point between the eccentric rotation piece and the wheel shaft, the hinge joint between the eccentric rotation piece and the piston rod of the power cylinder and the hinge joint between the eccentric rotation piece and the first land wheel are distributed in a triangular mode, the controller is used for obtaining the angle of the land leveling shovel measured by the angle sensor in real time, and the piston rod of the power cylinder is controlled to stretch out and draw back through the angle so that the land leveling shovel can be kept in a horizontal state. The land leveler can guarantee the level precision of the ground just by one-time work.

The invention relates to the technical field of microwave radio frequency, and provides an agile ALC system with an amplitude and pulse modulation function and a control method thereof. The system comprises a main link and a feedback loop, and the main link comprises an analog attenuation circuit, an amplification circuit, a switch and a coupler which are connected in sequence; the feedback loop comprises a detection circuit, a first voltage processing circuit, an ADC sampling circuit, an FPGA, a DAC conversion circuit, a second voltage processing circuit and a switch driving circuit. Through simple hardware circuit design and a digital control method, accurate and rapid power output with amplitude modulation and pulse modulation functions is realized. By means of FPGA + high-speed AD/DA and table look-up, the power agility time is in the ns level, the problem that the amplitude modulation rate is limited by ALC stabilization time is solved, meanwhile, the level accuracy when carrier output exists under pulse modulation is guaranteed, and complex hardware circuit design is avoided.

The invention provides an attitude adjusting method and hydraulic system for antenna testing. The system involves a platform hydraulic subsystem, a rotary platform, an erecting hydraulic subsystem, alevel gauge, a controller and a rangefinder; the rotary platform is installed on the platform hydraulic subsystem, the erecting hydraulic subsystem is installed on the rotary platform and used for erecting or lowering a tested antenna, and the rotary platform is used for driving the erecting hydraulic subsystem and the tested antenna to rotate in the horizontal direction; the level gauge is used for monitoring the platform hydraulic subsystem; the controller receives a monitoring result of the level gauge for monitoring and can control the platform hydraulic subsystem and the erecting hydraulic subsystem; and the rangefinder is used for measuring the distance between the tested antenna and an external test reference surface, and sending the measured distance to the controller, and the controller controls the platform hydraulic subsystem to adjust the distance between the tested antenna and the external test reference surface according to an external target requirement and the measureddistance. The system has the advantages of being high in adjusting precision and high in adjusting speed.

The invention discloses a workpiece leveling device based on a laser displacement sensor. The workpiece leveling device comprises a lathe bed, an X-direction feeding mechanism, a Z-direction feeding mechanism, an adapter plate, an angle fine tuning mechanism, a fixture, a test specimen, a tool, a laser displacement sensor, a rotary disk and a motor, wherein the X-direction feeding mechanism is arranged between the lathe bed and the Z-direction feeding mechanism to enable the Z-direction feeding mechanism to feed along an X direction; the Z-direction feeding mechanism is arranged between the X-direction feeding mechanism and the adapter plate to enable the adapter plate to feed along a Z direction; the angle fine tuning mechanism is arranged between the adapter plate and the fixture to enable the fixture to rotate relative to a Y direction, and the fixture clamps the test specimen; the rotary disk is rotatably arranged on the lathe bed, the motor is in transmission connection to the rotary disk, the tool is installed on the surrounding wall of the rotary disk, and the laser displacement sensor is arranged on the end surface of the rotary disk. The workpiece leveling device has the following advantages that the tool setting accuracy of a whole testing plane can be guaranteed, and the workpiece leveling accuracy of the whole testing plane can be guaranteed.

The invention discloses an upper assembly leveling method of tower type engineering machinery. An upper assembly comprises a rotating table (1) and an arm frame (2) mounted on the rotating table (1), and the leveling method comprises the following steps: the detection step: detecting the inclination angle of the upper assembly in a real-time manner; the control step: judging whether the upper assembly achieves the horizontal state or not according to the detected inclination angle, if the upper assembly achieves the horizontal state, finishing leveling; and if the upper assembly does not achieve the horizontal state, regulating the pitch angle (theta) of the arm frame (2) of the upper assembly till the upper assembly achieves the horizontal state. The invention further provides a corresponding upper assembly leveling device of the tower type engineering machine. According to the technical scheme, the pitch angle of the arm frame can be automatically regulated according to the detectedinclination angle of the upper assembly till the upper assembly achieves the horizontal state without manual operation, so that the efficiency is high, the safety is high and the leveling precision can be ensured.

The invention discloses an auxiliary sighting device for improving the attacking precision of a ground to ground missile. The auxiliary sighting device comprises a base, wherein balance brackets are symmetrically arranged at the left and right ends of the base; and each of the balance bracket comprises a ribbed plate hinged to the end face of the base, an oil liquid cavity in the ribbed plate, anadjusting rod connected with the inner wall of the lower end of the oil liquid cavity, and a hose connected between the oil liquid cavities in a communicating manner. According to the auxiliary sighting device, the oil liquid dynamic equilibrium relationship is adopted to arrange support parts in bilateral symmetry to ensure the self horizontal precision of a signal sighting device so as to improve the precision of attacking a target; in addition, a light ray refractive manner gathers annularly distributed secondary lamp light rays and primary lamp light rays together, the gathered light raysare horizontally shot out from the same launching tube to enhance a clear pilot signal of a light beam; the auxiliary sighting device is arranged on an arc shaped rail to carry out rotation control through the gear meshing manner so as to precisely change the sighting angle, so that high-precision semi-automatic guiding attacking sighting is realized.

The invention discloses an invariant-center-of-gravity optimal-time leveling algorithm. According to the method, position coordinates of four fulcrums are calculated based on an inclination angle of aplatform and a variable length; coarse adjustment is carried out, errors ei between all fulcrums and a center-of-gravity support point in a height direction are calculated based on the fulcrum coordinates, adjustment speeds vi and time sequences ti of all fulcrums are introduced into a calculation formula: ei=ei-viti, so that new errors ei after coarse adjustment are obtained; if max{ei} is larger than E2, the calculation process is repeated until max{ei} is less than E2 and then fine adjustment is carried out; at the fine adjustment link, speed coefficient k of al points are changed and calculation is carried out based on a formula: ei=ei-kviti, so that new errors ei after fine adjustment are obtained; if max{ei} is larger than E2, the calculation process is repeated until max{ei} is less than E2 and adjusting is stopped to complete the leveling process. On the basis of the optimal-time composite leveling algorithm, the four-axis linkage type fast coarse-tuning algorithm is combinedwith the optimal-time fine-tuning algorithm, so that the leveling efficiency is improved substantially and the leveling accuracy is enhanced.

The invention relates to a high-precision combined leveling method suitable for a standard rice seedling raising shed. The high-precision combined leveling method comprises the following steps that firstly, a shallow surface soil layer is chopped through square coulters at the front end of a machine body frame, then rotary extrusion soil leveling operation is performed through a rotary leveler, and a rolling soil leveling roller is driven by power rotation of a central main shaft to move forwards along with the leveler; the surface soil layer of a seedling raising shed basal plane is subjected to the action of rotating thrust of the rolling soil leveling roller so that soil particles of the surface soil layer of a seedling raising shed basal plane form a planar spiral flowing effect, continuous circular surface uniform flattening is carried out, under the action of spiral surface friction, soil at the raised areas are evenly pushed to lower terrain positions, it is fully guaranteed that the rolling soil leveling roller repeatedly extrudes the surface soil, soil layer air elimination gaps are removed, and therefore the flatness and the compaction degree are improved; and finally, the leveled basal plane is pressed by a drum-type pressing machine at the rear part of the machine body frame, and the soil basal plane is forcibly pressed again to compact the ground surface. According to the high-precision combined leveling method, a crushing-flattening-pressing combined finishing process is realized, and the requirement of finely flattening the seedling raising basal plane is met at a time.

The invention provides a position adjusting mechanism, a sensor assembly and a dynamic truck scale system. The position adjusting mechanism is used for leveling a sensor and comprises a supporting frame, a bearing plate and a position adjusting element. The bearing plate is arranged on the supporting frame, the upper surface of the bearing plate is a supporting bearing surface used for supportingthe sensor, and a position adjusting hole is formed in the supporting bearing surface. The position adjusting element is arranged at the position adjusting hole in a penetrating manner, an abutting end used for making point contact with the sensor is formed at the end, facing the sensor, of the position adjusting element, the position adjusting element is adjustably arranged in the axial directionof the position adjusting hole, and the abutting end conducts lifting adjustment on the position point, making contact with the abutting end, of the sensor so as to adjust the calibration plane of the sensor to be parallel to a reference plane. The problems that in the construction and installation process of the truck scale in the prior art, leveling and positioning operation of the weighing sensor is tedious, time-consuming and labor-consuming, and the leveling precision of the weighing sensor is low are solved.

The invention relates to a crane and aims to solve the problem that manual leveling of supporting legs of an existing wheeled crane is difficult to ensure precision. The invention provides an automatic landing leg leveling system which comprises four electric proportional valves, a leveling button, an electronic level meter and a controller, wherein the four electric proportional valves are used for correspondingly controlling vertical oil cylinders of four landing legs of a crane to stretch out and draw back; the leveling button is used for sending out leveling control signals; the electronic level meter is used for detecting the levelness of a frame of the crane; and the controller is used for receiving the levelness information of the frame and the automatic leveling control signal of the support leg detected by the electronic level meter, and controlling each electric proportional valve to enable the frame to be horizontal according to the levelness state information of the frame after receiving the leveling control signal. In the invention, after the leveling button triggers the automatic leveling system for the landing leg, the controller controls the corresponding electric proportional valve according to the detection result of the electronic level meter, so that the corresponding vertical oil cylinder of the landing leg does telescopic action, and the automatic leveling of the landing leg of the crane is realized, thereby reducing the operation difficulty and labor intensity of the leveling of the landing leg of the wheeled crane; and the leveling precision is ensured.

The invention discloses a roller type locating device used for locating and adjustment when a workpiece is clamped. The roller type locating device comprises at least three clamping jaw seats arranged in the peripheral direction of the workpiece, and roller assemblies used for driving the workpiece to rotate when the workpiece is clamped and leveling assemblies used for adjusting the end surface precision of the workpiece are arranged on the clamping jaw seats. According to the roller type locating device, when the workpiece is clamped, the workpiece is driven by the roller assemblies to roll on the chuck clamping jaw seats, so that harmful wear between the workpiece and the locating surfaces of the clamping jaw seats is effectively reduced; besides, the leveling assemblies are used for adjusting the end surface precision of the workpiece and ensuring the leveling precision of the workpiece, and through the cooperation of other clamping jaw seats, realize locating and adjustment when the workpiece is clamped; the roller type locating device is particularly suitable for the radial locating of large thin-walled components and effectively avoids the locating deviation of the large thin-walled components and the damage of wall surfaces, caused by hitting in a locating process; and by the roller type locating device, the whole clamping process is convenient, rapid, accurate and reliable.

The invention discloses a fabricated ground leveling assembly. The fabricated ground leveling assembly comprises a base (1), a leveling screw rod (2) connected with the base, a supporting piece (3), a cross-shaped floor connecting piece (4) and a rotating mechanism (5), wherein the supporting piece (3) and the cross-shaped floor connecting piece (4) are arranged on the leveling screw rod, and the rotating mechanism (5) is arranged between the supporting piece and the floor connecting piece; an adjusting base plate (21) with threads is arranged at the bottom of the leveling screw rod, and the diameter of the adjusting base plate is larger than that of the leveling screw rod; and the base comprises a buffering bottom pad (11) arranged on the lower part of a body and a screw connecting sleeve (12) arranged on the upper part of the body, the screw connecting sleeve comprises a screw connecting part (121) arranged on the upper part of the body and a bottom pad connecting part (122) arranged on the lower part of the body, and the adjusting base plate (21) is connected with the screw connecting part through threads. According to the fabricated ground leveling assembly, the construction period of decoration is shortened, floor installation and pipeline laying are facilitated, and secondary leveling can be carried out.

The invention discloses an oil pressure opening and closing device for cleaning a roller. The oil pressure opening and closing device comprises a support plate, an oil pressure cylinder and hydrauliccylinders, wherein a base plate is connected with the upper end of the support plate, the base plate is fixedly connected with side cover plates, a lower roller is inserted between the side cover plates, machine head bases are hinged above the side cover plates, an upper roller is inserted between machine head side plates, the upper parts of the machine head side plates are connected with machinehead end covers provided with the hydraulic cylinders, one end of the machine head end cover is hinged with an oil pressure rod of the oil pressure cylinder, one end of the machine head end cover is provided with a block; connecting members hinged with the bottom of the oil pressure cylinder are arranged at the outer side of the support plate, the two sides of the support plate are connected withsupport cover plates, a support rod is inserted between the support cover plates, and the support rod is hinged with a support; and the upper end of the support is connected with a baffle. Compared with the prior art, the oil pressure opening and closing device has the advantages that the machine head device can be opened, the roller can be cleaned quickly and thoroughly, and the leveling accuracycan be ensured.